Freezing the Nonclassical Crystal Growth of a Coordination Polymer Using Controlled Dynamic Gradients

Marta Rubio-Martinez, Inhar Imaz, Neus Domingo, Afshin Abrishamkar, Tiago Sotto Mayor, René M. Rossi, Carlos Carbonell, Andrew J. deMello, David B. Amabilino, Daniel Maspoch, Josep Puigmartí-Luis

    Research output: Contribution to journalArticleResearchpeer-review

    11 Citations (Scopus)

    Abstract

    An experiment was conducted to show that diffusion-limited and kinetically controlled growth regimes occurring in microfluidic devices can provide valuable insights into crystallization processes. The microfluidic channels employed in this study were structured in PDMS master form fabricated by standard photolithographic techniques. Before attaching the cured and structured PDMS mould to a glass coverslip through plasma activation, inlet holes connecting the microfluidic channels were punched with a Biopsy puncher. The cross-sectional dimensions of the microchannels were 50 μm into 50 μm for the four input microchannels, and 250 μm into 50 μm for the main reactor channel. The total length of the main reactor channel was 9 mm. Data were indexed, integrated, and scaled using HKL2000 software. The H atoms were included in theoretical positions but not refined. The low max value was due to the data collection process, which was performed in the BM16 line with only a phi scan. The structure was solved by direct methods using the program SHELXS-97. The AFM results suggest that the early stage isolated seeds organize at a single level and in a perpendicular fashion, leading to the final plate-like crystalline morphologies observed in bulk and at an FFR of 0.1.
    Original languageEnglish
    Pages (from-to)8150-8155
    JournalAdvanced Materials
    Volume28
    Issue number37
    DOIs
    Publication statusPublished - 1 Jan 2016

    Keywords

    • coordination polymers
    • crystal growth
    • microfluidics
    • out-of-equilibrium structures

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